Imaging unit, imaging apparatus, and computer-readable medium having stored thereon a control program for selectively using first and second amplified signals

An imaging apparatus comprising:

• an imaging unit comprising
• a pixel section that outputs a pixel signal corresponding to a reset potential after a reset and a signal potential after charge accumulation,
• an amplifying section that amplifies the pixel signal with a first amplification ratio or a second amplification ratio that is different from the first amplification ratio, and
• a control section that causes the amplifying section to amplify the pixel signal corresponding to a change from the reset potential to the signal potential with the first amplification ratio, and then causes the amplifying section to amplify the pixel signal corresponding to a change from the signal potential to the reset potential with the second amplification ratio;
• an image processing section that generates image data by acquiring a plurality of the pixel signals amplified by the amplifying section;
• a receiving section that receives a selection of ISO sensitivity from a user, wherein
• the control section sets an amplification ratio corresponding to the ISO sensitivity received by the receiving section as one of the first amplification ratio and the second amplification ratio;
• and
• a detecting section that detects brightness of a subject, wherein
• the control section sets an amplification ratio based on a detection result of the detecting section as the other of the first amplification ratio and the second amplification ratio.